PowerShell System Administration Functions

A comprehensive collection of PowerShell modules designed for Windows system administration, monitoring, and management tasks. This collection provides IT professionals with powerful tools for managing Windows systems, network operations, security monitoring, and system maintenance.

Table of Contents

• Module Overview
• Function Quick Reference
• System Requirements
• Installation
• Quick Start
• Error Handling
• Contributing
• License

Module Overview

Module	Description	Functions	Links
ActiveDirectoryManagement	Active Directory user and group management operations	8+	.psm1
Common	Shared utility functions and common operations used across modules	12+	.psm1
EventLogging	Windows event log export, analysis, and monitoring capabilities	6+	.psm1
NetworkDiagnostics	Network traffic analysis, connectivity testing, and diagnostics	8+	.psm1
NetworkManagement	Network configuration and Wake-on-LAN functionality	5+	.psm1
ServiceManagement	Windows service monitoring, control, and status reporting	7+	.psm1
SoftwareManagement	Software update detection and management operations	6+	.psm1
SystemInformation	System status, hardware details, and Windows Defender monitoring	10+	.psm1
SystemMaintenance	System optimization, cleanup, and maintenance operations	9+	.psm1
SystemMonitoring	Performance monitoring and system health tracking	8+	.psm1
UserSessionManagement	User session monitoring and failed logon detection	6+	.psm1
WindowsUpdateManagement	Windows Update history and status monitoring	4+	.psm1

Function Quick Reference

Function	Purpose	Module	Syntax
Get-WindowsUpdateHistory	Retrieve Windows update installation history	WindowsUpdateManagement	Get-WindowsUpdateHistory [-MaxResults <Int32>]
Get-FailedLogons	Monitor failed logon attempts for security analysis	UserSessionManagement	Get-FailedLogons [-ComputerName <String>] [-Username <String>] [-Hours <Int32>]
Start-SystemOptimization	Perform comprehensive system cleanup and optimization	SystemMaintenance	Start-SystemOptimization [-Categories <String[]>] [-Force] [-Detailed]
Get-SoftwareUpdates	Check for available software updates	SoftwareManagement	Get-SoftwareUpdates [-Installable] [-Installed]
Get-DefenderStatus	Check Windows Defender protection status	SystemInformation	Get-DefenderStatus
Get-ServiceList	List Windows services with status and configuration	ServiceManagement	Get-ServiceList [-Filter <String>]
Export-EventLogs	Export Windows event logs to various formats	EventLogging	Export-EventLogs -LogName <String> -OutputPath <String> [options]
Start-NetworkTrafficAnalysis	Analyze network traffic patterns and bandwidth usage	NetworkDiagnostics	Start-NetworkTrafficAnalysis [-ComputerName <String>] [-Interface <String>] [-Duration <Int32>] [-Detailed]
Send-WakeOnLAN	Send Wake-on-LAN packets to remote computers	NetworkManagement	Send-WakeOnLAN -MACAddress <String> [-Port <Int32>]

System Requirements

Component	Requirement
PowerShell Version	5.1 or later
Operating System	Windows 10 (1809+) / Windows Server 2016+
Execution Policy	RemoteSigned or Unrestricted
Administrator Rights	Required for most operations
Network Access	Required for network-related functions

Installation

Prerequisites

1. PowerShell 5.1 or later
2. Administrator privileges (for most functions)
3. Appropriate Windows version (Windows 10/Server 2016+)

Module Import

# Import individual modules as needed
Import-Module .\WindowsUpdateManagement\WindowsUpdateManagement.psm1
Import-Module .\SystemInformation\SystemInformation.psm1
Import-Module .\NetworkDiagnostics\NetworkDiagnostics.psm1

# Or import all modules
Get-ChildItem -Path . -Filter "*.psm1" -Recurse | ForEach-Object { Import-Module $_.FullName }

Execution Policy

# Set execution policy to allow module imports
Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser

Quick Start

Basic System Health Check

# Import required modules
Import-Module .\SystemInformation\SystemInformation.psm1
Import-Module .\WindowsUpdateManagement\WindowsUpdateManagement.psm1

# Check Windows Defender status
$DefenderStatus = Get-DefenderStatus
Write-Host "Defender Protection: $($DefenderStatus.RealTimeProtectionEnabled)"

# Check recent Windows updates
$RecentUpdates = Get-WindowsUpdateHistory -MaxResults 10
Write-Host "Recent Updates: $($RecentUpdates.Count)"

# Check for available software updates
$AvailableUpdates = Get-SoftwareUpdates -Installable
Write-Host "Available Updates: $($AvailableUpdates.Count)"

For comprehensive examples and detailed usage instructions, see the individual module READMEs linked in the Module Overview section.

Error Handling

All functions implement comprehensive error handling including:

• Parameter Validation: Input parameters are validated for type, range, and format
• Permission Checks: Functions verify required permissions before execution
• Service Availability: Checks for required Windows services and features
• Network Connectivity: Validates network access for remote operations
• Graceful Degradation: Provides fallback options when possible
• Detailed Error Messages: Clear, actionable error information

Common Error Scenarios

1. Access Denied: Run PowerShell as Administrator
2. Service Unavailable: Ensure required Windows services are running
3. Network Timeout: Check firewall settings and network connectivity
4. Invalid Parameters: Verify parameter format and valid ranges
5. Insufficient Disk Space: Ensure adequate space for operations

Contributing

Contributions are welcome! Please follow these guidelines:

1. Code Standards: Follow PowerShell best practices and approved verbs
2. Documentation: Include comprehensive help documentation
3. Error Handling: Implement robust error handling and validation
4. Testing: Test thoroughly on supported Windows versions
5. Examples: Provide clear usage examples

License

This project is licensed under the MIT License. See the LICENSE file for details.

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Note: These functions require appropriate permissions and are designed for Windows environments. Always test in a non-production environment before deploying to production systems.

For detailed documentation, comprehensive examples, and advanced usage scenarios, please refer to the individual module README files linked in the Module Overview section above.